Then it studied the pulse waveform distortion from two aspects of the amplitude spectrum and phase spectrum.
随后从脉冲信号的幅度谱和相位谱两个方面研究了脉冲波形失真情况。
A time history is synthesized from this amplitude spectrum and a random phase spectrum, combined with an envelope function.
据此幅值谱和一个随机相位谱，并与一个时程包络函数结合，合成一个子震时程。
However phase spectrum contains all the relative information of signals, and there is more information in phase than in amplitude.
然而，相位谱实际上包含了信号的所有相对信息。
Taking the sphere signal as an example, it is found that the phase spectrum is clearer than the amplitude one in resuming input signal.
通过对一个球形信号进行傅立叶正反变换，发现用相位谱恢复的图形轮廓比振幅谱恢复的图形轮廓清晰。
Based on relative phase IP method, the relative phase spectrum IP method is developed. The formula of relative phase spectrum is defined.
本文在激电相对相位法的基础上提出了激电相对相位谱观测法，并定义了相对相位谱公式。
PRMF relative phase spectrum IP method with PRMF signal as excitation has the same advantage of relative phase IP method, and offer rich information for the discrimination of anomaly source.
利用伪随机多频信号作为场源的多频相对相位谱观测法拥有相对相位观测法的优点，同时为异常源的区分提供丰富的信息。
The results of coagulation spectrum and phase spectrum analysis give us that sea temperature changes in East equator Pacific region go 1.67-year ahead precipitation changes in Summer in Ningxia.
对凝聚谱和位相谱值的分析结果表明，赤道东太平洋地区海温变化超前宁夏夏季降水变化1.67年，这就为宁夏的夏季降水长期预报提供了依据。
In induced polarization method, multi-frequency relative phase spectrum method use above signal as field source, showed the advantage of PRMF signal used as field source for electrical exploration.
多频激电相对相位谱法采用上述信号作为场源，充分反映了该信号作为电法勘探场源的优点。
This paper presents the development of a pulse-echo measurement method, based on the use of a phase spectrum to determine the ultrasonic wave velocity. A detailed descripsion of the theory is given.
本文报道了一种基于脉冲回波相位谱的超声波速度测量方法，并给出了它的详细理论推导过程。
This paper presents the development of a pulse-echo measurement method, based on the use of a phase spectrum to determine the ultrasonic wave velocity. A detailed descripsion of the theory is given.
本文报道了一种基于脉冲回波相位谱的超声波速度测量方法，并给出了它的详细理论推导过程。
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